Issue 78, 2024

Electrochemical reduction of nitrate to hydroxylamine on gold electrode

Abstract

In this study, we explore the efficacy of gold (Au) as a selective electrocatalyst for the reduction of nitrate to hydroxylamine, a valuable nitrogen-based chemical, while also evaluating the by-product formation of ammonia. We systematically optimized various experimental parameters including nitrate concentration, pH, and applied potential. We found that at an applied potential of −0.7 V vs. RHE in 0.1 M HNO3, Au achieves a 230.1 ± 19 μmol NH2OH h−1 cm−2 yield, with a 34.2 ± 2.8% faradaic efficiency. This study underscores the potential of Au as an efficient and selective electrocatalyst for generating value-added nitrogen products through an electrochemical pathway.

Graphical abstract: Electrochemical reduction of nitrate to hydroxylamine on gold electrode

Supplementary files

Article information

Article type
Communication
Submitted
19 Jul 2024
Accepted
29 Aug 2024
First published
30 Aug 2024
This article is Open Access
Creative Commons BY license

Chem. Commun., 2024,60, 10918-10921

Electrochemical reduction of nitrate to hydroxylamine on gold electrode

Y. Xie, M. De Ras, J. Zhao, T. Liu, F. Lai, J. Hofkens and M. B. J. Roeffaers, Chem. Commun., 2024, 60, 10918 DOI: 10.1039/D4CC03620D

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